Knowledge of new techniques for flute interpretation is a important requirement for the actual flutist. Advanced resources for the development of sound, from different points of view, are invaluable tools for proper, creative and critical interpretation. The aspects related to timbre, pitch, microtonía, polyphony, breath and alternative techniques of sound production, are the most important techniques that rely works of recent decades and require a knowledge and a deep control. In LESSONS OF CONTEMPORARY AND AVANT GARDE FLUTE teaching by Julián Elvira the most representative works of contemporary music will be worked from their resources used in the composition in order to strengthen them and make them into everyday tools and other avant garde works.